Railroad gate



y |220. RAILROAD GATE.

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RAILROAD GATE.

Specification of Letters ,Patent Patentd June 1S, 1922.

Application filed August 23, 1921. Serial No. 494,731.

T0 @ZZ fr0/wm t may concern: f

Be it known that I, BoNAvnNTURo Izzo, a citizen of the Kingdom of Italy,residing at Paterson, in the county of Passaic and State of New Jersey,have invented new and useful Improvements in Railroad Gates, of whichthe following is a specification.

This invention relates to a railway crossing gate, the general object ofthe invention being to provide means for operating the gate by the trainso that the gate will be closed by the train approaching the crossingand will be opened by the train when leaving the crossing.

Another object of the invention is to provide means for sounding analarm in the cab of the engine when the train approaches a crossing.

This invention also consists in certain other features of constructionand in ,the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in-whichr-v Figure1 is a view of'a part of a railroad track and a crossing showing theapplication of the invention.

Figure 2 is an enlarged sectional view through a part of the gate andthe operating means.

Figure 3 is an enlarged detail view. l

Figure 4 is a view of the part carried by the train.

Figure 5 is a sectional view through this art. p Figure 6 is a sectionaldetail view of part of the gate.

Figure 7 is a diagrammatic view of the alarm means.

In Figure 1, A indicates the railroad track and B the crossing. Cindicates a portion of an engine on the track and D indicates the twogates for controlling the crossing. In carrying out my invention Ilocate a housingl adjacent the track an appreciable distance from thecrossing which carries a vertically arranged shaft 2 which passesthrough the top of the casing. The outer end of this shaft has securedthereto a vertically arranged roller 3 which is adapted gates D.

`to be engaged by a member 4 on the train. The lower end of the shaft 2carries a bev- 10 so that the rotary movement of the wheel will causethe piston to reciprocate in the cylinder. `A rod 11 isconnected withthe front end of the piston and passes through the outer end of thecylinder. A coil spring 12 is located on this rod 11 and has one endbearing against a vstop 13 on the rod and its innery end bearing`against lugs 14 projecting into the cylinder so that this spring willtend to hold the piston in its outer position.

A housing 1 is placed adjacent the track on the opposite side of thecrossing from housing 1 and this housing 1 has associated therewith anarrangement of parts similar to that of thehousing 1. The rods 11 and 11of the pistons have their outer ends connected with the cables 14 and 14which pass over the guiding roller 15 and through the tubes 16 into thehousing 17 of one of the A pulley 18 is connected with the gate andstraps 19 each have one end secured to the pulley and the other endconnected with a cable. These parts are so arranged that when a pull isexerted upon one cable the pulley will be rotated in one direction bythe strap which is connected with this cable so that the opposite strapwill be wound upon the pulley. A weight 20 is connected with the gatefor insuring its remaining in opened and closed position. The two gatesare operatively connected together so th at the movement of one gate istransmitted to the other.

It will thus be seen that when a train approaches the crossing the party4 thereon will strike the roller 3 so as to cause the same to rotate andthus revolve wheel 6 to cause the rod 10 to retract the piston 9 so asto pull upon the cable 14 and rotate the pulley 18 by means of the strap19. This action will lower the gate, as shown in full lines in Figure 2.After the train passes the spring 12 will return the parts associatedwith the housing to normal position and thus slack the cable 14, thegates remaining closed due to gravity. Thus the gates are automaticallyclosed at the approach of the train and after the train passes thecrossing the part 4 Will strike the roller 8 of the other'housing so asto retract the piston 9 and thus pullupon the cable 14 to revolve thepulley 18 back to its normal position with the gates in open position.After part 4 on the train leaves the roller 8 the spring 12 Will returnthe parts to normal position With cable 14 slack, ready for the nexttrain to operate the parts in front ofthe crossing to lower the gates. l

I also provide means for warning the engineer that he is approaching acrossing. Such means are associated With the part 4 which is otsubstantially elliptical shape, as shown in Figure 4, and is formed otspring metal so that the curved part 4 Will be contracted when engagedby the roller and thisA contraction movement will force inwardly thespring plunger 21 so as to cause the same to strike the switch operatingpart 27 and close the switch 28 of the circuit 29 which includes thealarm 30 so as to sound said alarm, thus notifying the engineer that heis ap} oroaching a crossing. Part 4 is provided with a flange 4 forbolting the part to a part on the engine. p

It is thought from the foregoing description that the advantages andnovel features oil my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall Within the lscope of the appended claims.

What I claim is l. In combinationnwith a railroad crossing gate, arotatable member placed adjacent the track, one on each side of thecrossing, means on the train for engaging said members to rotate thesame, means for converting the motion into a reciprocating motion, meansior lowering the gate by such means When the first member is engaged bythe train and 'lor raising the gate when the second member is engaged bythe train and signal ,means each housing and geared to the shaft, acylinder connected with each housing, a piston in each cylinder, apiston rod connecting each piston with the Wheel so that therotarymovement of the Wheel Will reciprocate the piston` a rod connected with'the piston and extending through the outer end of each ,cylinder,yspring means for normally holding the pistons in their outer positions,a drum on the gate and flexible means for connecting the outer ends ofthe last mentioned rod With said drum. Y f

3. In combination Witha railroad gate, means along the track Yforactuating the same, a part on the train tor engaging such means tooperate the same, such means including a contractible part, a springlplunger connected with said contractible part and a circuit including aswitch closed by the plunger when the part is contracted and a signalconnected with the circuit.

In testimony whereof I affix my signature.

BONAVENTURO IZZO.

